Question

Jamal earned $40 from his weekend job. He spent 1/4 of it on a Xbox game and 1/5 of it on a movie ticket. How much money does he have left?

Answer 1

1/4 and 1/5 should be the same. So 1/4 = 5/20 and 1/5 = 4/20. Make them into percentages, 5/20 x 5 = 25/100 = 25% and 4/20 x 5 = 20/100 =  20%. Then add them 25%+20% = 45%. Then do 40 x .45 = 18$. Jamal would have 18$. 

Answer 2

Jamal has 22 dollars left. 
1/5 of 40 is 8
1/4 of 40 is 10

8+10=18

40-18=22